More airplane engines need new parts because of bad metal
What happened
US aviation regulators are proposing that more airplane engines get new parts because of faulty metal. This means more planes will need maintenance to replace specific turbine disks and compressor spools.
Why it matters
Airplane engine parts are supposed to last for thousands of hours of flight. When a manufacturer finds a batch of parts made with bad material, it means those parts could fail early. This proposed rule expands the number of engines that need these specific parts replaced, which will be a significant cost and logistical challenge for airlines and maintenance providers.
The signal
Watch for the final rule to see if the FAA expands the list of affected engines even further, or if the manufacturer identifies more faulty parts.